<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let week=prompt('')
        switch (week){
                case '星期一':
                alert('Monday');
                break
                case '星期二':
                alert('Tuesday');
                break
                case '星期三':
                alert('Wednesday');
                break
                case '星期四':
                alert('Thursday');
                break
                case '星期五':
                alert('Friday');
                break
                case '星期六':
                alert('Saturday');
                break
                case '星期天':
                alert('Sunday');
                break
                default:
                alert('这是平凡的一天')
        }
    </script>
</body>
</html>